Problem Solving Question Of The Day

Of the science books in a certain supply room, 50 are on botany, 65 are on zoology, 90 are on physics, 50 are on geology, and 110 are on chemistry. If science books are removed randomly from the supply room, how many must be removed to ensure that 80 of the books removed are on [...]

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Written by victor_ray on April 17th, 2008 with 3 comments.
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(A) 81
(B) 159
(C) 166
(D) 285
(E) 324

GRE Question of the Day by victor_ray on April 17th, 2008 with 3 answers.
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3 Answers

Read the answer left by other GRE Takers below, or:

Maddy
#1. April 24th, 2008, at 9:51 PM.

50 are on botany,
65 are on zoology,
50 are on geology,
90 are on physics,
and 110 are on chemistry

you can select 50+65+50+79+79+1 –>324 to be sure that 80 books are of same kind.

bindu
#2. June 24th, 2008, at 9:15 PM.

why not (50 + 65 + 50 + 80 + 80) = 325
can you plz explain why you take 79 + 79 + 1 ?

shradha
#3. July 7th, 2008, at 12:19 PM.

whats the answer to this ques?
according to me its 285
as all the books are on science

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